Top left key gives the wrong characters

[tmmls]

Hi,

I've installed the software and all works well except for the top left key, just below the "esc" key.
The keyboard should type "@" and the "#" character, but it types "³" and "²".

I'm using this keyboard layout...
https://image.coolblue.io/products/1020917?height=768&width=1024

Does anyone have a fix ?

Thanks

T